Display screen or portion thereof with graphical user interface for managing diabetes



The FIGURE is a front view of a display screen or portion thereof with graphical user interface for managing diabetes, showing our new design.

The broken lines in the FIGURE illustrate a display screen or portion thereof with graphical user interface for managing diabetes and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with graphical user interface for managing diabetes, as shown and described. 